What is GDP of a country? Who has undertaken this task of measuring GDP in India?

What is GDP of a country? Who has undertaken this task of measuring GDP in India?

Answer:
The value of final goods and services produced in each sector during a particular year provides the total production of the sector for that year. And the sum of production in the three sectors gives ’ what is called the Gross Domestic Product or GDP of a country.
In India, the mammoth task of measuring GDP is undertaken by the central government ministry. This mini stry with the help of various government departments of all the Indian States and Union Territories, collects information related to total Volume of goods and services and their prices and then estimates the GDP.